[JBoss JIRA] (WFLY-6319) NPE in LocalEjbReceiver.removeClusterNodes during server shutdown
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[
https://issues.jboss.org/browse/WFLY-6319?page=com.atlassian.jira.plugin....
]
Richard Achmatowicz edited comment on WFLY-6319 at 3/18/16 11:43 AM:
---------------------------------------------------------------------
Hi Dimitii
I've been trying to find out why this NPE is occurring in the first place. It can
certainly happen if the EJBClientContext which holds the cluster contexts being removed
has already been closed (any request to get a cluster context returns null), but i'm
not sure if or how that can happen yet.
I suspect it is related to the fact that we do not clean up stale cluster contexts in
EJBClientContexts when a cluster is entirely removed in
LocalEJBReceiver.registryRemoved(). I think this may be the source of the problem and
should probably be fixed as it was in VersionOneProtocolChannelReceiver.
But its only a guess and needs to be confirmed.
was (Author: rachmato):
Hi Dimitii
I've been trying to find out why this NPE is occurring in the first place. It can
certainly happen if the EJBClientContext which holds the cluster contexts being removed
has already been closed (any request to get a cluster context returns null), but i'm
not sure if or how that can happen yet.
I suspect it is related to the fact that we do not clean up stale cluster contexts in
EJBClientContexts when a cluster is entirely removed in
LocalEJBReceiver.registryRemoved(). I think this may be the source of the problem and
should probably be fixed as it was in VersionOneProtocolChannelReceiver.
NPE in LocalEjbReceiver.removeClusterNodes during server shutdown
-----------------------------------------------------------------
Key: WFLY-6319
URL: https://issues.jboss.org/browse/WFLY-6319
Project: WildFly
Issue Type: Bug
Components: Clustering, EJB
Reporter: Ladislav Thon
Assignee: Dmitrii Tikhomirov
In a failover test that passivates sessions to a SQL database (though I think this
isn't really relevant much), I've seen a NPE in
{{LocalEjbReceiver.removeClusterNodes}}:
{code}
04:09:29,330 WARN [org.jboss.msc.service.fail] (MSC service thread 1-6) MSC000004:
Failure during stop of service jboss.ejb3.localEjbReceiver.value:
java.lang.NullPointerException
at
org.jboss.as.ejb3.remote.LocalEjbReceiver.removeClusterNodes(LocalEjbReceiver.java:701)
at org.jboss.as.ejb3.remote.LocalEjbReceiver.disassociate(LocalEjbReceiver.java:681)
at
org.jboss.ejb.client.EJBClientContext.unregisterEJBReceiver(EJBClientContext.java:446)
at org.jboss.ejb.client.EJBReceiverContext.close(EJBReceiverContext.java:57)
at org.jboss.as.ejb3.remote.LocalEjbReceiver.stop(LocalEjbReceiver.java:410)
at
org.jboss.msc.service.ServiceControllerImpl$StopTask.stopService(ServiceControllerImpl.java:2056)
at
org.jboss.msc.service.ServiceControllerImpl$StopTask.run(ServiceControllerImpl.java:2017)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
{code}
This happens during server shutdown, so it probably doesn't affect anything.
Logs:
https://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/eap-7x-failover-db-s...
https://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/eap-7x-failover-db-s...
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Richard Achmatowicz (JIRA)